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      Decrease of lichens in Arctic ecosystems: the role of wildfire, caribou, reindeer, competition and climate in north-western Alaska

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      Polar Research
      Wiley-Blackwell

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          Role of land-surface changes in arctic summer warming.

          A major challenge in predicting Earth's future climate state is to understand feedbacks that alter greenhouse-gas forcing. Here we synthesize field data from arctic Alaska, showing that terrestrial changes in summer albedo contribute substantially to recent high-latitude warming trends. Pronounced terrestrial summer warming in arctic Alaska correlates with a lengthening of the snow-free season that has increased atmospheric heating locally by about 3 watts per square meter per decade (similar in magnitude to the regional heating expected over multiple decades from a doubling of atmospheric CO2). The continuation of current trends in shrub and tree expansion could further amplify this atmospheric heating by two to seven times.
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            Responses of Arctic Tundra to Experimental and Observed Changes in Climate

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              The evidence for shrub expansion in Northern Alaska and the Pan-Arctic

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                Author and article information

                Journal
                Polar Research
                Polar Research
                Wiley-Blackwell
                1751-8369
                December 16 2016
                December 16 2016
                : 28
                : 3
                : 433-442
                Article
                10.1111/j.1751-8369.2009.00113.x
                bfb4b895-615f-418d-87c7-4987e84bd044
                © 2016
                History

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